a²b-ab²
=ab(a-b)
=(3√2+2√3)(3√2-2√3)[(3√2+2√3)-(3√2-2√3)]
=[(3√2)²-(2√3)²]*4√3
=(18-12)*4√3
=6*4√3
=24√3确定吗？呵呵！！确定